5 A Round to Near-round; Moderate/Low Luster; Thin Nacre (less than .2 of total nacre); 60-70% Inclusion Free Surface; Good to Moderate Matching.
5 A Round to Near-round; Moderate/Low Luster; Thin Nacre (less than .2 of total nacre); 60-70% Inclusion Free Surface; Good to Moderate Matching.
5 A圆到接近圆的程度，中/低的光泽，簿的珠层（小于0.2的珠层含量），60%-70%的表皮光洁度，良好到中等的匹配。